CL - Capillary Leaks

Features

VTI's CL Model Calibrated Gas Leaks have a stainless steel capillary that has been precision crimped to provide an accurate flow-rate restriction for any gas. The gas, under pressure in the reservoir, flows through the capillary restriction and into the system to which it is attached using one of the many fittings available. This yields a precise, known flow rate.

The CL models have an all-welded construction and use an all-metal shut-off valve making them unbreakable and bakeable for UHV applications. They also have a low temperature coefficient, approximately 0.2% per degree C and are available in a wide range of leak rates. Caution should be taken when considering capillary leaks for flow rates smaller than 10-6 atm-cc/sec, however, due to potential plugging of the leak. VTI takes care in the proper construction and processing during manufacture to insure a clean and stable flow of high-purity gas or gas mixtures.

Choosing the CL Calibrator

  • CAN BE PROVIDED WITH ANY GAS - or mix.
  • UNBREAKABLE - all stainless steel, all welded.
  • WIDE LEAK-RATE CHOICE - typically 10-7 to 10-3 range.
  • STABLE - low temperature coefficient of 0.2% / °C.
  • BAKEABLE FOR UHV USE - using all metal fittings.
  • MEETS ISO REQUIREMENTS - NIST-traceable, A2LA-
    accredited Calibration Certification.

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PDF drawing.